The Department for Education and Employment releases two different sets of figures, splitting the sold-off games fields into two categories. Campaigners fear the split figures could disguise the true scale of a national problem.
Any plot of land less than the size of half a football pitch is now classified by the government as an 'area smaller than a sports pitch'. While these figures are still covered by new government legislation to stop the sales, the National Playing Fields Association is concerned the changes could see smaller areas being sold off.
National Playing Fields Association director Elsa Davies said: 'I don't think there is any benefit in making the figures confused but I think it would be helpful for the department to explain in some instances why they have let land be disposed of.'